Optical calculation system, calculation compensation method and photonic integrated circuit chip

Abstract

The invention provides an optical computing system, a computing compensation method and a photonic integrated circuit chip. The optical computing system includes: a beam splitter which divides an optical wave input to the optical computing system into a first branch and a second branch according to a preset proportion; the calculation module is configured to receive the light wave of the second branch, load an electric signal to the light wave of the second branch to form a light signal, and calculate information represented by the light signal; the monitoring module is configured to receive a first branch of the light wave and monitor the light wave of the first branch in real time; and the post-processing module is configured to perform compensation operation on the calculation result output by the calculation module according to the monitoring result obtained by the monitoring module through monitoring. According to the invention, the extra monitoring module is arranged to monitor the change of the incident light power of the chip in real time, and the calculation precision is compensated in real time based on the change.

Description

Technical Field

[0001] The present invention relates to the field of optical computing, and in particular to an optical computing system, a computing compensation method and a photonic integrated circuit chip. Background Art

[0002] Optical computing is a computing method that uses light as a carrier. Information or data is usually encoded in the phase, intensity and other characteristics of light, and operations on these characteristics can be regarded as computational processing of information. For high-precision optical computing, people usually expect the light source to have sufficient stability, but contrary to expectations, the optical signal output by the light source usually cannot achieve the stability expected for high-precision computing, especially in silicon photonic integrated optical computing systems that require additional integrated light sources. How to achieve stable chip light input required for high-precision computing becomes a problem. Summary of the invention

[0003] In view of the defects of the existing optical computing system, the present invention provides an optical computing system, a computing compensation method and a photonic integrated circuit chip.

[0004] In one aspect, an embodiment of the present invention provides an optical computing system, comprising:

[0005] A beam splitter, which splits the light wave input to the optical computing system into a first branch and a second branch according to a preset ratio;

[0006] a computing module configured to receive the optical wave of the second branch and load an electrical signal onto the optical wave of the second branch to form an optical signal, and to compute information (or data) represented by the optical signal;

[0007] a monitoring module, configured to receive the first branch of the light wave and perform real-time monitoring on the light wave of the first branch; and

[0008] A post-processing module is configured to perform a compensation operation on the calculation result output by the calculation module according to the monitoring result obtained by the monitoring module through the monitoring.

[0009] In some embodiments of the present invention, the monitoring result obtained by the monitoring module through the monitoring includes an optical power value. The optical power value can be used to measure the intensity of light or the brightness of a light source.

[0010] In some embodiments of the present invention, the compensation operation performed by the post-processing module includes:

[0011] Obtaining the current calculation result output by the calculation module and the current optical power value provided by the monitoring module;

[0012] Dividing the current calculation result by the current optical power value to obtain a first intermediate value;

[0013] The first intermediate value is multiplied by a monitoring result corresponding to the anchor power to compensate the current calculation result of the calculation module.

[0014] In some embodiments of the present invention, the post-processing module includes: a divider configured to divide the current calculation result by the current optical power value to obtain a first intermediate value, and a multiplier configured to use the first intermediate value to multiply the monitoring result corresponding to the anchor power.

[0015] In some embodiments of the present invention, the monitoring module comprises:

[0016] a photodetector optically connected to the second branch of the beam splitter and configured to convert the light wave of the second branch into an analog electrical signal; and

[0017] The analog-to-digital converter is configured to convert the analog electrical signal into a digital electrical signal as a monitoring result.

[0018] In some embodiments of the present invention, the monitoring module further includes a transimpedance amplifier, which is disposed between the photodetector and the analog-to-digital converter.

[0019] In some embodiments of the present invention, the computing module includes: an optical modulator unit, an optical matrix multiplier unit, a photodetector unit, and an analog-to-digital conversion unit.

[0020] On the other hand, an embodiment of the present invention provides a method for compensating a light calculation result, comprising:

[0021] Splitting the light wave input to the optical computing system into a first branch and a second branch according to a preset ratio by a beam splitter;

[0022] Sending the light wave of the second branch to a computing module of the optical computing system, wherein the computing module is configured to add an electrical signal to the light wave of the second branch to form an optical signal and to calculate information represented by the optical signal;

[0023] Performing real-time monitoring on the light waves of the first branch;

[0024] A compensation operation is performed on the calculation result output by the calculation module according to the monitoring result obtained through the monitoring.

[0025] In some embodiments of the present invention, the monitoring result obtained by the monitoring includes an optical power value. The optical power value can be used to measure the intensity of light or the brightness of a light source.

[0026] In some embodiments of the present invention, the compensation operation includes:

[0027] Obtaining a current calculation result output by the calculation module and a current optical power value obtained through the monitoring;

[0028] Dividing the current calculation result by the current optical power value to obtain a first intermediate value;

[0029] The first intermediate value is multiplied by a monitoring result corresponding to the anchor power to compensate for a current calculation result of the calculation module.

[0030] In some implementations of the present invention, obtaining the current optical power value through the monitoring includes: performing real-time monitoring on the optical wave of the first branch and obtaining a first optical power value as the current optical power value.

[0031] In some other embodiments of the present invention, obtaining the current optical power value through the monitoring includes: acquiring the offset of the system; performing real-time monitoring on the optical wave of the first branch to obtain a first optical power value; and using the optical power value obtained by subtracting the offset from the first optical power value as the current optical power value.

[0032] In some embodiments of the present invention, the method for compensating the optical calculation result also includes obtaining a system offset, wherein before dividing the current calculation result by the current optical power value to obtain a first intermediate value, the current optical power value is subtracted from the offset to obtain a second intermediate value, and the value obtained by dividing the current calculation result by the second intermediate value is used as the first intermediate value.

[0033] In addition, an embodiment of the present invention further provides a photonic integrated circuit chip, which includes:

[0034] A beam splitter having an input port for receiving an input light wave and a first output port and a second output port for outputting the light wave, and configured to split the input light wave into a first branch output from the first output port and a second branch output from the second output port according to a preset ratio;

[0035] an optical processing module, optically connected to the second output port of the beam splitter, and configured to receive the light wave of the second branch and load an electrical signal onto the light wave of the second branch to form an optical signal, and optically process the optical signal, wherein the optical processing represents a calculation performed on the information represented by the optical signal;

[0036] A photodetector is optically connected to the first output port of the beam splitter and is configured to convert the light wave of the second branch into an analog electrical signal.

[0037] In some embodiments of the present invention, the optical processing module includes an optical modulator unit, an optical matrix multiplier unit, and a photodetector unit.

[0038] The application of the present invention has the following effects and advantages:

[0039] The present invention provides an additional monitoring module to monitor the change of input optical power in real time, and compensates the calculation accuracy in real time based on the change.

[0040] The various aspects, features, advantages, etc. of the present invention will be described in detail below in conjunction with the accompanying drawings. According to the following detailed description in conjunction with the accompanying drawings, the above aspects, features, advantages, etc. of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a framework diagram of an optical computing system according to an embodiment of the present invention.

[0042] Figure 2 It is a framework diagram of a monitoring module according to an implementation mode of the present invention.

[0043] Figure 3 It is a framework diagram of a post-processing module according to an embodiment of the present invention.

[0044] Figure 4 is a framework diagram of an optical computing system including a photonic integrated circuit chip according to another embodiment of the present invention. DETAILED DESCRIPTION

[0045] Exemplary embodiments will be described in more detail below with reference to the accompanying drawings. Certain terms may be used in the description for reference only, and these terms are not intended to limit the scope of protection. Unless the context clearly indicates, "first", "second" and other similar numerical terms do not mean order or sequence.

[0046] It should be understood that when an element or feature is referred to as being "connected to" or "coupled to" another element or feature, it can be directly on, connected to or coupled to the other element or feature, or there can be one or more intermediate elements or features. In addition, it should also be understood that when an element or feature is referred to as being "between" two elements or features, it can be the only element or feature between the two elements or features, or there can also be one or more intermediate elements or features.

[0047] The terms used herein are for the purpose of describing specific embodiments, but are not intended to limit the present invention. Such terms may include the words specifically mentioned herein, their derivative words and words of similar meanings. As used herein, the singular forms "one" and "a kind of" are intended to also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "comprise", "include" and "have" specify the existence of stated features, integral bodies, steps, operations, elements and / or parts in this article, but do not exclude the existence or addition of one or more other features, integral bodies, steps, operations, elements, parts and / or their sets. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Expressions such as "at least one of..." modify the entire list of elements when they are before the list of elements, rather than modifying the separate elements of the list.

[0048] As used herein, "substantially," "about," and the like are used as terms of approximation rather than as terms of degree, and are intended to take into account the inherent variations in measured or calculated values ​​that one of ordinary skill in the art will recognize. As used herein, the terms "use," "using," and "used" may be considered synonymous with the terms "utilize," "utilizing," and "utilized," respectively.

[0049] For silicon photonics systems, stable light input to the chip requires not only stable light output from the light source itself, but also sufficient stability from the time the laser is emitted to the time it is coupled into the chip. Currently, there is no suitable solution in the existing technology that can meet the needs of high-precision computing in the long term. Problems in this regard will cause instability in the optical computing system and degradation of optical computing accuracy, affecting the promotion of optical computing on the application side.

[0050] The present invention adds an additional monitoring module to monitor the change of the chip input optical power in real time, and compensates the calculation accuracy in real time based on the change.

[0051] like Figure 1 As shown, in an exemplary embodiment of the present invention, the optical computing system 100 includes but is not limited to a beam splitter 140 , a monitoring module 110 , a computing module 120 , and a post-processing module 130 .

[0052] The beam splitter 140 is configured to separate a predetermined proportion of the light waves from the input light waves, output from the first branch and transmit to the monitoring module, and the remaining proportion of the light waves is output from the second branch and transmitted to the calculation module 120. In some embodiments, the beam splitter 140 has an input port for inputting the light waves and a first output port and a second output port for outputting the light waves, wherein the light waves of the first branch are output from the first output port, and the light waves of the second branch are output from the second output port. The calculation module 120 is configured to receive the light waves of the second branch and load the electrical signal onto the light waves of the second branch to form an optical signal, and calculate the information (or data) represented by the optical signal. In some embodiments, the calculation module 120 may include one or a combination of any multiple of an optical modulator unit, an optical matrix multiplication unit, a photodetector unit, a transimpedance amplifier unit, and an analog-to-digital conversion unit. Among them, the optical modulator unit includes a single modulator or a modulator array composed of multiple modulators, which is used to modulate the electrical signal to be processed into a light wave to form an optical signal; the optical matrix multiplication unit is used to perform matrix multiplication operation on the optical signal; the photodetector unit includes a single photodetector or a photodetector array composed of multiple photodetectors, which is used to receive the light output of the matrix multiplication unit and generate a corresponding photocurrent; the transimpedance amplifier unit is used to receive the photocurrent output by the photodetector unit and convert it into an output voltage and perform amplification processing; the analog-to-digital conversion unit is used to convert the output voltage of the transimpedance amplifier into a digital signal, and the digital signal represents the current calculation result of the calculation module 120.

[0053] The monitoring module 110 is configured to receive the light wave of the first branch and monitor the light wave of the first branch in real time. In some embodiments, the monitoring module 110 may monitor the intensity or brightness of the light wave.

[0054] The post-processing module 130 is configured to perform a compensation operation on the calculation result output by the calculation module 120 according to the monitoring result obtained by the monitoring module 110 through the monitoring.

[0055] In an exemplary embodiment, the monitoring result obtained by the monitoring module 110 through the monitoring includes an optical power value. The optical power value can be used to measure the intensity or brightness of the light wave. The compensation operation performed by the post-processing module 130 includes: when the current optical input power is P(t), obtaining the current calculation result R(t) output by the calculation module and the current optical power value p(t) provided by the monitoring module; dividing the current calculation result by the current power value to obtain a first intermediate value k, where k=R(t) / p(t); using the first intermediate value to multiply the monitoring result p_ref corresponding to the anchor power P_ref, so that P(t) / p(t)=P_ref / p_ref, to compensate the current calculation result of the calculation module, and the result after accuracy compensation R_ref=k×p_ref, where p_ref is the monitoring result corresponding to the anchor power P_ref. Theoretically, the result R of the optical calculation is proportional to the input light intensity, that is, the optical power P. By monitoring the size of P in real time, the calculation result size R / P of the unit light intensity can be obtained. Based on this, the calculation result R_ref at the anchor power P_ref can be inferred.

[0056] Specifically, the calculation result of unit light intensity can be calculated by the following formula (1):

[0057] R / P=R(t) / P(t)=R_ref / P_ref⑴;

[0058] The separation ratio of the beam splitter 140 is fixed, that is, the ratio of the optical power P input into the computing system to the optical power p input into the monitoring module at each moment is fixed, that is:

[0059] P(t) / p(t)=P_ref / p_ref⑵;

[0060] According to equation (1) and equation (2), it can be concluded that R_ref=R(t) / p(t)×p_ref.

[0061] like Figure 2 As shown, in an exemplary embodiment, the monitoring module 110 includes:

[0062] a photodetector 112 optically connected to the first branch of the beam splitter 111 and configured to convert the light wave of the first branch into an analog electrical signal; and

[0063] An analog-to-digital converter (ADC) 114 is configured to convert the analog electrical signal into a digital electrical signal as a monitoring result.

[0064] In some embodiments, the beam splitter 111 may be a 95 / 5 beam splitter, which splits 5% of the light waves from the input light to enter the monitoring module 110 through the first branch of the beam splitter for power monitoring, and the remaining 95% of the light waves still enter the calculation module 120 for processing, thereby achieving real-time monitoring of the input light without affecting the processing accuracy of the calculation module 120. It should be understood that any proportion of light waves can be split for real-time monitoring as long as it does not affect the accurate processing of information by the calculation module 120, that is, any proportion of beam splitters can be used without affecting the accurate processing of information by the calculation module 120.

[0065] In some embodiments of the present invention, the monitoring module 110 further includes a transimpedance amplifier (TIA) 113, which is disposed between the photodetector 112 and the ADC 114. The transimpedance amplifier 113 is used to convert the photocurrent signal detected by the photodetector 112 into a voltage signal and perform amplification processing.

[0066] like Figure 3 As shown, in an exemplary embodiment, the post-processing module 130 includes: a divider 131 and a multiplier 132. The first input end of the divider 131 is connected to the monitoring module 110, and the second input end is connected to the calculation module 120, and is configured to divide the current calculation result R(t) provided by the calculation module 120 by the current power value p(t) provided by the monitoring module 110 to obtain a first intermediate value k. The first input end of the multiplier 132 is connected to the divider 131 to receive the first intermediate value k, and the second input end receives the monitoring result p_ref corresponding to the preset anchor power P_ref, and is configured to use the first intermediate value k to multiply the monitoring result p_ref corresponding to the anchor power P_ref, so as to obtain the calculation result R_ref corresponding to the anchor power.

[0067] It can be seen from the above description that the monitoring module 110 involves optical processing devices (e.g., photodetector 112, etc.) and electrical processing devices (e.g., TIA113, ADC 114, etc.), wherein the optical processing devices can be integrated with the optical devices in the computing module 120 on a photonic integrated circuit chip. The post-processing module 130 mainly performs data post-processing in the digital domain. Therefore, in some embodiments, the computing module 120 converts the optical signal representing the current calculation result into an analog electrical signal through photoelectric conversion, and further converts the analog electrical signal representing the current calculation result into a digital electrical signal representing the current calculation result through analog-to-digital conversion. The post-processing module 130 performs the above compensation processing on the current calculation result represented by the digital electrical signal. It should be understood that the electrical processing-related devices of the post-processing module 130 and the monitoring module 110 can be implemented by one or more electronic integrated circuit chips or electronic devices. The one or more electronic integrated circuit chips or electronic devices are packaged together with the optical chip to form a device for implementing the optical computing system 100. Figure 4 The structure of an optical computing system including a photonic integrated circuit chip 200 according to another exemplary embodiment is shown.

[0068] In an exemplary embodiment, if Figure 4 As shown, a photonic integrated circuit chip 200 provided by the present invention may include but is not limited to: a beam splitter 140 , an optical processing module 122 , and a photodetector 112 .

[0069] The input light wave is split into two branches according to a preset ratio through the beam splitter 140, wherein the light wave of the first branch is sent to the photodetector 112, and the light wave of the second branch is sent to the optical processing module 122. The beam splitter 140 has an input port for inputting the light wave and a first output port and a second output port for outputting the light wave, wherein the light wave of the first branch is output from the first output port, and the light wave of the second branch is output from the second output port.

[0070] The optical processing module 122 is connected to the second output port of the beam splitter 140 to receive the light wave of the second branch. Figure 4As shown, the optical processing module 122 may include a modulator unit, an optical matrix multiplication unit, and a photodetector unit. The modulator unit includes a plurality of optical modulators for modulating the electrical signal to be processed from the DAC unit 121 into a light wave to form an optical signal, the optical matrix multiplication unit is used to perform matrix multiplication on the light signal, and the photodetector unit includes a plurality of photodetectors for receiving the light output of the optical matrix multiplication unit and generating a corresponding photocurrent, which is converted into a digital signal representing the current calculation result by the ADC unit 123. In an optional embodiment, the optical processing module 122 also includes an additional beam splitter (e.g., a 1×N beam splitter) for splitting the received light wave of the second branch into a plurality of light waves of equal power and transmitting them to the modulator unit.

[0071] The photodetector 112 is connected to the first output port of the beam splitter 140 to receive the light wave of the first branch. The photodetector 112 is configured to convert the light wave of the first branch into an analog electrical signal, and the analog electrical signal is converted into a digital signal representing the current optical power value obtained by monitoring through the ADC 114. The digital signal representing the current calculation result and the digital signal representing the current optical power value obtained by monitoring are input to the post-processing module 130 for processing to compensate the calculation result, and the processing is combined with the above Figure 3 The described processing will not be repeated here.

[0072] In some embodiments, the input light wave comes from a light source outside the chip via an optical input coupler ( Figure 4 The optical input coupler includes a grating coupler. The light source generating the input light wave includes a semiconductor laser, and the laser generated by the semiconductor laser is sent to the grating coupler through an optical fiber or an optical fiber array. The grating coupler couples the laser into the photonic integrated circuit chip. In an optional embodiment, the semiconductor laser can be integrated into the photonic integrated circuit chip 200. In this case, the photonic integrated circuit chip 200 can omit the grating coupler, and the input light is directly transmitted in the chip.

[0073] Although not shown, it should be understood that the photonic integrated circuit chip 200 of the present invention further includes a plurality of optical waveguides, which are used to achieve optical connection and optical communication between various optical devices in the chip. The photonic integrated circuit chip 200 of the present invention further includes a plurality of conductive paths, which are used to achieve electrical connection and information transmission between electronic components within or outside the chip.

[0074] It can be seen from the above description that in another exemplary embodiment, the optical computing system provided by the present invention may include a photonic integrated circuit chip 200, a post-processing module 130, a DAC unit 121, an ADC unit 123, and an ADC 114. Among them, the photodetector 112 and the ADC 114 in the photonic integrated circuit chip 200 may be used as exemplary components of the above-mentioned monitoring module 110, and the optical processing module 122, the DAC unit 121, and the ADC unit 123 in the photonic integrated circuit chip 200 may be used as exemplary components of the above-mentioned computing module 120. In some embodiments, one or any combination of the post-processing module 130, the DAC unit 121, the ADC unit 123, and the ADC 114 may be configured or integrated on an electronic integrated circuit chip.

[0075] As can be seen from the above, the present invention also provides a method for compensating light calculation results. In an exemplary embodiment, the method includes:

[0076] Splitting the light wave input to the optical computing system into a first branch and a second branch according to a preset ratio by a beam splitter;

[0077] Sending the light wave of the second branch to a computing module of the optical computing system, wherein the computing module is configured to add an electrical signal to the light wave of the second branch to form an optical signal and to calculate information represented by the optical signal;

[0078] Performing real-time monitoring on the light waves of the first branch;

[0079] A compensation operation is performed on the calculation result output by the calculation module according to the monitoring result obtained through the monitoring.

[0080] In some embodiments, the monitoring result obtained by the monitoring includes an optical power value, which can be used to measure the intensity of light or the brightness of a light source.

[0081] In some embodiments, the compensation operation includes:

[0082] Obtaining a current calculation result R(t) output by the calculation module and a current optical power value p(t) obtained through the monitoring;

[0083] Dividing the current calculation result by the current optical power value to obtain a first intermediate value k, k=R(t) / p(t);

[0084] The first intermediate value k is multiplied by the monitoring result p_ref corresponding to the anchor power P_ref to compensate the current calculation result of the calculation module, that is, the result after accuracy compensation R_ref=k×p_ref.

[0085] In some implementations of the present invention, obtaining the current optical power value through the monitoring includes: performing real-time monitoring on the optical wave of the first branch and obtaining a first optical power value as the current optical power value.

[0086] In some other embodiments of the present invention, obtaining the current optical power value through the monitoring includes: obtaining the offset of the system; performing real-time monitoring on the light wave of the first branch to obtain the first optical power value; using the optical power value obtained by subtracting the offset from the first optical power value as the current optical power value. The offset is caused by the imperfection of system components, mainly including the dark current of the photodetector, the deviation of the ADC, etc. The offset can be extracted by turning off the external light source and measuring the output of the ADC 114.

[0087] In some other embodiments of the present invention, the method for compensating the optical calculation result further includes obtaining an offset B of the system, which is caused by imperfections in the system components and mainly includes dark current of the photodetector, deviation of the ADC, etc. The offset B can be extracted by turning off the external light source and measuring the output of the ADC 114. Accordingly, before the current calculation result is divided by the power value to obtain the first intermediate value, the current optical power value p(t) provided by the monitoring module is subtracted from the offset B to obtain a second intermediate value k', that is, k'=p(t)-B, and the value of the current calculation result divided by the second intermediate value is used as the first intermediate value k, that is, k=R(t) / (p(t)-B).

[0088] Those skilled in the art should understand that what is disclosed above is only an implementation mode of the present invention, and it certainly cannot be used to limit the scope of rights requested for patent protection in this application. Equivalent changes made according to the implementation mode of the present invention are still within the scope covered by the claims of this application.

Claims

1. An optical computing system, comprising: A beam splitter, which splits the light wave input to the optical computing system into a first branch and a second branch according to a preset ratio; a computing module configured to receive the optical wave of the second branch and load an electrical signal onto the optical wave of the second branch to form an optical signal, and to compute information represented by the optical signal; a monitoring module, configured to receive the first branch of the light wave and perform real-time monitoring on the light wave of the first branch; as well as A post-processing module is configured to perform a compensation operation on the calculation result output by the calculation module according to the monitoring result obtained by the monitoring module through the monitoring.

2. The optical computing system of claim 1, wherein: The monitoring result obtained by the monitoring module through the monitoring includes an optical power value.

3. The optical computing system of claim 2, wherein: The compensation operation performed by the post-processing module includes: Obtaining the current calculation result output by the calculation module and the current optical power value provided by the monitoring module; Dividing the current calculation result by the current optical power value to obtain a first intermediate value; The first intermediate value is multiplied by a monitoring result corresponding to the anchor power to compensate the current calculation result of the calculation module.

4. The optical computing system of claim 3, wherein: The post-processing module includes: a divider configured to divide the current calculation result by the current optical power value to obtain a first intermediate value, and a multiplier configured to multiply the monitoring result corresponding to the anchor power by the first intermediate value.

5. The optical computing system of claim 1, wherein: The monitoring module comprises: a photodetector optically connected to the second branch of the beam splitter and configured to convert the light wave of the second branch into an analog electrical signal; and The analog-to-digital converter is configured to convert the analog electrical signal into a digital electrical signal as a monitoring result.

6. The optical computing system of claim 5, wherein: The monitoring module further includes a transimpedance amplifier disposed between the photodetector and the analog-to-digital converter.

7. The optical computing system of claim 1, wherein: The calculation module comprises: Optical modulator unit, optical matrix multiplier unit, photodetector unit, analog-to-digital conversion unit.

8. A method for compensating a light calculation result, comprising: Splitting the light wave input to the optical computing system into a first branch and a second branch according to a preset ratio by a beam splitter; Sending the light wave of the second branch to a computing module of the optical computing system, wherein the computing module is configured to add an electrical signal to the light wave of the second branch to form an optical signal and to calculate information represented by the optical signal; Performing real-time monitoring on the light waves of the first branch; A compensation operation is performed on the calculation result output by the calculation module according to the monitoring result obtained through the monitoring.

9. The method according to claim 8, characterized in that The monitoring results obtained through the monitoring include optical power values.

10. The method according to claim 9, characterized in that The compensation operation includes: Obtaining a current calculation result output by the calculation module and a current optical power value obtained through the monitoring; Dividing the current calculation result by the current optical power value to obtain a first intermediate value; The first intermediate value is multiplied by a monitoring result corresponding to the anchor power to compensate for a current calculation result of the calculation module.

11. The method according to claim 10, characterized in that Obtaining the current optical power value through the monitoring includes: A first optical power value obtained by real-time monitoring of the optical wave of the first branch is used as the current optical power value.

12. The method according to claim 11, characterized in that Obtaining the current optical power value through the monitoring includes: Get the system offset; Performing real-time monitoring on the light wave of the first branch to obtain a first optical power value; An optical power value obtained by subtracting the offset from the first optical power value is used as the current optical power value.

13. A photonic integrated circuit chip, comprising: A beam splitter having an input port for receiving an input light wave and a first output port and a second output port for outputting the light wave, and configured to split the input light wave into a first branch output from the first output port and a second branch output from the second output port according to a preset ratio; an optical processing module, optically connected to the second output port of the beam splitter, and configured to receive the light wave of the second branch and load an electrical signal onto the light wave of the second branch to form an optical signal, and optically process the optical signal, wherein the optical processing represents a calculation performed on the information represented by the optical signal; A photodetector is optically connected to the first output port of the beam splitter and is configured to convert the light wave of the second branch into an analog electrical signal.

14. The photonic integrated circuit chip according to claim 13, characterized in that: The optical processing module includes an optical modulator unit, an optical matrix multiplier unit, and a photodetector unit.

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